What is the score in the following position? Must black fill a or are the stones considered dead without this move? Assume area counting (not Chinese) and no pass stones. Never mind that Black has lost either way. I'm interested in whether Black must play a or not.
Charles No need for Black to play inside: the stones are dead, despite the approach move at a.
Daniel: Even if white goes first here, the best she can do is put black in atari.
Now white has no legal moves in this part of the board...